[media] s5p-tv: Fix incorrect usage of IS_ERR_OR_NULL in mixer_drv.c

NULL check on clocks obtained using common clock APIs should not
be done. Use IS_ERR only.
[s.nawrocki: removed unrelated whitespace change]

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 17 insertions, 5 deletions

diff --git a/drivers/media/platform/s5p-tv/mixer_drv.c b/drivers/media/platform/s5p-tv/mixer_drv.c
index 5733033a6ead..51805a5e2beb 100644
--- a/drivers/media/platform/s5p-tv/mixer_drv.c
+++ b/drivers/media/platform/s5p-tv/mixer_drv.c
@@ -211,6 +211,15 @@ fail:
         return ret;
 }
 
+static void mxr_resource_clear_clocks(struct mxr_resources *res)
+{
+        res->mixer      = ERR_PTR(-EINVAL);
+        res->vp         = ERR_PTR(-EINVAL);
+        res->sclk_mixer = ERR_PTR(-EINVAL);
+        res->sclk_hdmi  = ERR_PTR(-EINVAL);
+        res->sclk_dac   = ERR_PTR(-EINVAL);
+}
+
 static void mxr_release_plat_resources(struct mxr_device *mdev)
 {
         free_irq(mdev->res.irq, mdev);
@@ -222,15 +231,15 @@ static void mxr_release_clocks(struct mxr_device *mdev)
 {
         struct mxr_resources *res = &mdev->res;
 
-        if (!IS_ERR_OR_NULL(res->sclk_dac))
+        if (!IS_ERR(res->sclk_dac))
                 clk_put(res->sclk_dac);
-        if (!IS_ERR_OR_NULL(res->sclk_hdmi))
+        if (!IS_ERR(res->sclk_hdmi))
                 clk_put(res->sclk_hdmi);
-        if (!IS_ERR_OR_NULL(res->sclk_mixer))
+        if (!IS_ERR(res->sclk_mixer))
                 clk_put(res->sclk_mixer);
-        if (!IS_ERR_OR_NULL(res->vp))
+        if (!IS_ERR(res->vp))
                 clk_put(res->vp);
-        if (!IS_ERR_OR_NULL(res->mixer))
+        if (!IS_ERR(res->mixer))
                 clk_put(res->mixer);
 }
 
@@ -239,6 +248,8 @@ static int mxr_acquire_clocks(struct mxr_device *mdev)
         struct mxr_resources *res = &mdev->res;
         struct device *dev = mdev->dev;
 
+        mxr_resource_clear_clocks(res);
+
         res->mixer = clk_get(dev, "mixer");
         if (IS_ERR(res->mixer)) {
                 mxr_err(mdev, "failed to get clock 'mixer'\n");
@@ -299,6 +310,7 @@ static void mxr_release_resources(struct mxr_device *mdev)
         mxr_release_clocks(mdev);
         mxr_release_plat_resources(mdev);
         memset(&mdev->res, 0, sizeof(mdev->res));
+        mxr_resource_clear_clocks(&mdev->res);
 }
 
 static void mxr_release_layers(struct mxr_device *mdev)